public class Cone<E> {
	double height;
	E bottom;
	public Cone(E b){
		bottom=b;
	}
	public void setHeight(double h){
		height=h;
	}
	public double computerVolume(){
		String s = bottom.toString();
		double area = Double.parseDouble(s);
		return 1.0/3.0*area*height;
	}
}
